protected void ButtonCheckOut_Click(object sender, EventArgs e) { if (String.IsNullOrEmpty(addressId)) { //Access Delivery_Address table AddressUtil adr = new AddressUtil(); adr.AddressType = TextBoxAddressType.Text; adr.UserName = Session["user"].ToString(); adr.Phone = TextBoxPhone.Text; adr.AddressLine1 = TextBoxAddressLine1.Text; adr.AddressLine2 = TextBoxAddressLine2.Text; adr.ZipCode = TextBoxZipCode.Text; adr.InsertAddress(); addressId = adr.Delivery_ID; } Response.Redirect("Thanks.aspx"); }